Allows you to rearrange elements in a stack. When you place one element on top of another, you create an overlapping stack. You can stack as many markup elements as you want and then use this command to reorder elements.
You can move a markup element to the front or send it to the back of a stack, or move it in front of or behind text. You can also stack groups and then change their stacking order.
This command is available only when you select one or more markup elements.